Presses



(No Model.)

O. E. HOLBROOK.

SHEET PILING ATTACHMENT FOR PRINTING PRESSES.

Patented 'Apr. 5, 1887.

Wztnessea:

N. PETERS. FhoXo-Lnhngnpher. Washington. 0.1:.

law, showing connections.

UNITED STATES PATENT OFFICE.

CHARLES E. HOLBROOK, OF XVATERTOXVN, NEW YORK.

SHEET-PILlNG ATTACHMENT FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 360,439, dated April 5,1887.

Application filed August 9, 1886. Serial Yo. 210,460. (No model.)

To all whom it may concern:

Be it known that I, CHARLES E. HoLBRooK, a citizen of the United States,and residing at the city of Watertown, in the county of J efferson andState of New York, have invented a new and useful Improvement inSheet-Piling Attachments for Printing-Machines, of which the followingis a specification.

The object of my invention is to place printed sheets of paper in aneven and regular pile as they are thrown out by the fly of aprinting-press, thus doing away with the labor commonly known asjogging. I attain this object by means of mechanism illustrated in theaccompanying drawings, in which- Figure 1 is a perspective viewof myinvention. A part of the frame and cylinder of-a press is shown toexplain the manner in which the connections are made with the press.Fig. 2 is a vertical section of the receivingtable cut through thecenter from front to back, and detached from the press. Fig. 3 is anenlarged view of cam, giving the form of construction thereof. Fig. 4 isa top view of col- Fig. 5 is an enlarged View of a section of thereceiving-table, showing one of the movable gages.

Similar letters refer to similar parts throughout the several views.

The table L is provided with four automatically-moving gages or guides,K, which are attached by thumb-screws to the four slotted slides J. Theslides J are arranged to slide toward and from the center of thetablethrough slots cut in the top of the table. The four connecting-rods Iare attached to the under side of the slides J, and connect them withthe collar G. The collar G slides upward and downward upon the verticalshaft N, which is fastened to the center of the under side of thetabletop. The bottom of the collar G rests upon the forked end of thelever F, which is attached to the horizontal shaft E, which has at itsend the crank D. The crank D is connected with the lever B by means ofthe rod 0.

Upon the upper end of the lever B is a roller, 0, which is held againstthe face of the cam A. The power which holds the roller 0 against theface of the cam is the two springs, H, the lower ends of which areattached to the two fork-ends of the lever F, the upper ends of saidsprings being attached to hooks on the under side of the table-top. Theslides J are placed upon the loose rollers Q to reduce fric tion.

The drawings represent the machine at the instant that a sheet of paperhas been laid down by the fly of the press upon the table L. The roller0 is against the face of the cam A at its smallest radius, and the gagesK are all open to their farthest extent from the center, and about oneand one-half to two inches from the edges of the pile of papers P uponall sides. As the cam A revolves with the cylinder in the directionindicat d by the arrow, the larger radius of the cam at a is broughtagainst the roller 0, which pushes the top of the lever B forward, andthe lower end is pushed correspondingly backwardj This moves the crankD, causing the shaft E to turn a little, which I lowers the forked endof the lever F. The weight of the collar G causes it to fall as the fork.is lowered. This draws upon the four connecting-rods I, causing theslides J, with the gages K attached, to move a short distance toward thecenter. The next instant the cam A presents a smaller radius to theroller 0, and the springs H draw the fork F and collar G upward, thuscausing the gages Kto return to nearly their original position. Then theprojection Z) upon the cam is forced against the roller 0, and, being alarger radius than a, the gages are moved inward a trifle farther thanbefore. A smaller radius of the cam is then presented, and the gages aremoved backward about half as far as they were moved forward. Thevariations upon the face of the cam gives a backwardand-forward orjogging motion to the gages, and if the sheet of paper is not laid downaccurately upon the pile, the gages will gradually push or jog it towardthe center. i

This jogging motion of the gages is kept up until the portion of the camd d is brought against the roller. This being thelargest radius of thecam, the gages are moved toward the center until they touch the edges ofthe pile of paper, and are there held stationary while the cylinder ofthe press is making about one-third of a revolution. Then the cam againpresentsits smallest radius to the roller, and the gages are movedoutward to their farthest extent at the instant that another sheet ofpaper is laid upon the table, and the operation is then repeated.

There are small projections R upon the under side of the gages K, whichmove in grooves m. These projections extend below the surface of thetable and prevent the edges of the first sheets of paper that are laiddown from slipping under the gages. At each end of the gages are thecreases S, resembling the teeth of a ratchet. Vhen the edge of a sheetof paper is turned up against the face of agage, these ratchet-shapedcreases prevent it from slipping farther up, and thus aid in pushing thepaper toward the center.

There is no positive motion of the gages K,

the power which moves the gages backward being the springs H, and thatwhich moves them forward being the weight of the collar G. This preventsthe breaking of any parts in case the gages should be set too near theedges of the paper, and enables the machine to adjust itself to slightvariations which may occur in the sizes of the sheets of paper. If,owing to friction or other causes, the collar G does not quickly respondto the lowering of the fork F, a small spring can be attached to theupper portion of the collar and connect it with the fork, thusfurnishing additional power.

venient place, by modifications of connecting mechanism the cam A can beattached t0 any shaft which makes one revolution while one sheet ofpaper is being printed.

The shape of the cam A may be modified to suit the requirements ofdifferent kinds of presses. Upon a press intended to run at a high rateof speed better results will be obtained by having fewer and moregradual variations upon the cam, and upon some classes of work a simplecam with one side gradually increasing to a greater radius will be foundadvantageous.

I do not limit myself to the particular shape of the cam A that is shownin the drawings.

The gages K, operating on four sides of the paper, were secured to me byclaims 1 and 3 of my patent which was granted August 24, 1886, andbearing No. 348,123. I therefore do not in this application make claimto such a combination, broadly.

That I now claim as new and as my invention, and desire to secure byLetters Patent, 1s

1. In a sheet-piling attachment for printingpresses, the combination,with the automatic gages K, of a revolving cam for operating the samehaving different radii and intermediate mechanism between the two,substantially as described.

2. The combination of the (am A, lever B, rod 0, crank D, shaft E,forked lever F, collar G, vertical shaft N, connecting-rods I, springsH, slides J, and gages K, substantially as described, and for thepurposes set forth.

CHARLES E. HOLBROOK.

Witnesses:

ADDIoE E. DEWEY, DRAYTON E. SWEET.

